25402940 has 12 divisors (see below), whose sum is σ = 53346216. Its totient is φ = 10161168.

The previous prime is 25402873. The next prime is 25402963. The reversal of 25402940 is 4920452.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 635054 + ... + 635093.

It is an arithmetic number, because the mean of its divisors is an integer number (4445518).

Almost surely, 2^25402940 is an apocalyptic number.

25402940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25402940 is an abundant number, since it is smaller than the sum of its proper divisors (27943276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25402940 is a wasteful number, since it uses less digits than its factorization.

25402940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270156 (or 1270154 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 25402940 is about 5040.1329347548. The cubic root of 25402940 is about 293.9643469500.

The spelling of 25402940 in words is "twenty-five million, four hundred two thousand, nine hundred forty".